CN108011839A - The implementation method of policy tag based on IPv4 - Google Patents
The implementation method of policy tag based on IPv4 Download PDFInfo
- Publication number
- CN108011839A CN108011839A CN201711353395.3A CN201711353395A CN108011839A CN 108011839 A CN108011839 A CN 108011839A CN 201711353395 A CN201711353395 A CN 201711353395A CN 108011839 A CN108011839 A CN 108011839A
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- Prior art keywords
- policy
- policy tag
- field
- packet head
- ipv4
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/20—Traffic policing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/90—Buffering arrangements
- H04L49/9057—Arrangements for supporting packet reassembly or resequencing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/03—Protocol definition or specification
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/325—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the network layer [OSI layer 3], e.g. X.25
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a kind of implementation method of the policy tag based on IPv4, it is used for representing policy tag whether is included in IP packet head by the indication field that the highest order reserved field of Flags fields in IP packet head is used as to policy tag, the policy tag uses Identification fields in IP packet head to be defined.Using technical solution of the present invention, IP forwardings control and policy control uncoupling are more reasonably managed network, and being capable of compatible existing equipment, it is not necessary to do the upgrading of whole net.
Description
Technical field
The present invention relates to a kind of network communication method, the implementation method of more particularly to a kind of policy tag based on IPv4,
Belong to technical field of the computer network.
Background technology
In the existing network architecture, the flow of IPv4 still dominates.In IP flows, the network equipment often will
Control of both being done to flow：When forwarding control, second, policy control.Forwarding control is generally basede on IP address progress, and
Policy control often based on different demands, does different deployment.
The network equipment does flow policy control and is generally basede on IP address or dscp field progress, since the route of IP has
The characteristic of longest prefix match, it is possible to when doing strategy for IP address section, but carrying out policy control, often produce forwarding
The situation that behavior is coupled with strategy interaction.For some specific IP address, certain a kind of strategy can only be often used.It is if right
It carries out uncoupling, then needs to do single control strategy for each IP address, so as to cause the waste of tactful list item again；
When being controlled based on DSCP (Differentiated Services Code Point, differentiated services code points) field, by
In the field digit very little, the policing type that can be supported is less.And dscp field is chiefly used in the priority of queue at present, if
Policy control is used further to, then can produce other coupled relation.
The prior art also discloses a kind of method, additionally inserts a tactful identification field in messages and does plan to flow
Slightly control.But the expense of message transmissions can be caused to increase in this way, and cannot compatible existing network, it is necessary to additionally set
It is standby to update hardware specially to identify the strategy identification field so that the cost of policy control is higher.
In the practical application of the prior art, IP address-based policy control is still relatively broad policy control side
How method, solve forwarding and be coupled with strategy, be then urgent problem to be solved in network application.
The content of the invention
In view of the deficiencies of the prior art, it is an object of the invention to provide a kind of realization side of the policy tag based on IPv4
Method, by redefine it is IPv4 existing in Flags and Identification fields, implementation strategy control and forwarding control go
The method of coupling.
To realize aforementioned invention purpose, the technical solution adopted by the present invention includes：
It is used to represent IP using the highest order reserved field of Flags fields in IP packet head as the indication field of policy tag
Whether policy tag is included in heading；The policy tag uses Identification fields in IP packet head to be determined
Justice.
Preferably, when the value of the indication field is 1, represent to include policy tag in IP packet head；The indication field
Value be 0 when, represent IP packet head in do not include policy tag.
Preferably, Identification field definitions are burst information or policy tag in the IP packet head.
Preferably, when the indication field represents to include policy tag, Identification field definitions are marked for strategy
Label, for policy control；When the indication field represents not including policy tag, Identification field definitions are burst
Information, the burst for IP packet are handled.
Equipment preferably for that cannot identify the indication field, performs equipment original strategy protocol.
Preferably, when equipment is by identifying that the indication field learns that IP packet head includes policy tag, institute is extracted
The policy field in policy tag is stated, makees corresponding policy control, and the equipment no longer supports IP layers of burst to handle；
When equipment is by identifying that the indication field learns that IP packet head does not include policy tag, the equipment supports IP
The burst processing of layer.
Compared with prior art, advantages of the present invention includes：IP is forwarded into control and policy control uncoupling, more reasonably
Network is managed, and being capable of compatible existing equipment, it is not necessary to do the upgrading of whole net, traditional scheme and the technology of the present invention side
Case can coexist in same network.
Brief description of the drawings
Fig. 1 is that IPv4 label fields define schematic diagram；
Fig. 2 is Flags field definition schematic diagrames.
Embodiment
In view of deficiency of the prior art, inventor is able to propose the present invention's through studying for a long period of time and largely putting into practice
Technical solution.The technical solution, its implementation process and principle etc. will be further explained as follows.
Technical solution proposed by the present invention is to forward the behavior uncoupling with strategy, and forward still with traditional IP
Address mode, and policy control then uses a new field, so therebetween without the relation of any coupling, control is more
Flexibly；Meanwhile present invention further contemplates that the problem of compatible conventional network equipment, it is not necessary to carry out unified rise to conventional network equipment
Level, enabling identifying the equipment of the newer field can use the technical solution in the present invention to carry out policy control, and traditional sets
It is standby then traditional policy control mode can be continuing with, so can compatible existing network deployment, realize that upgrading progressively is changed
Generation, framework and deployment on existing net influence minimum.
Technical scheme is will be apparent from as follows, in the prior art such as Fig. 1 of the definition to IPv4 label fields institutes
Show, its data structure show is as follows：
Version, 4 bit fields, it is indicated that currently used IP version.
IP HeaderLength (IHL), refer to datagram protocol head length, and presentation protocol head has the quantity of 32 word lengths,
It is directed toward data origination, minimum value 5.
Type-of-Service (TOS), it is indicated that upper-layer protocol to handle the desired service quality of current data report, and
Datagram is allocated according to importance information, these 8 bit fields are used to distributing priority, delay, handling capacity and reliable
Property.
Total Length, the byte length of specified whole IP data packets, including data and protocol header, its maximum are
65,535 bytes.Typical host can receive the datagram of 576 bytes.
Identification, identification field, for identifying current data report, which is received by transmitting terminal distribution help
End intensive data is called the score piece.
Flags, attribute field, is made of 3 bit fields, wherein lowest order (MF) control burst, and there are next burst to put
For 1, otherwise set to 0 representative and terminate burst；Interposition (DF) points out whether data packet can carry out burst；Highest order for reserved field not
Use, be worth for 0.
Fragment Offset, 13 bit fields, it is indicated that the relevant fragment data position of initiating terminal with source data report, branch
Hold Target IP and suitably rebuild source data report.
Time-to-Live, is a kind of counter, subtracts 1 successively in each point value for abandoning datagram until being reduced to 0, this
Sample ensures the endless loop procedure of data packet (i.e. TTL).
Protocol, it is indicated that after the completion of IP processing procedures, there is which kind of upper-layer protocol to receive and import data packet.
Header Checksum, assist in ensuring that the integrality of IP agreement head.Due to the change of some protocol header fields, such as
Life cycle (Time to Live), this just needs that each point is recalculated and examined.
Source Address, source host IP address.
DestinationAddress, destination host IP address.
Options, Option Field, it is allowed to which IP supports various options, such as security.
Padding, fills field, 32 is supplied by adding 0 behind Optional Field, in order to ensure header length is
32 multiple.
Wherein, Identification fields are used to represent burst information, and the burst for IP packet is handled, and works as datagram
Due to MTU (maximum transmission unit) of the length more than network during necessary burst, the value of this identification field is copied to institute
In the identification field of some data report tablets.The value of identical identification field makes each data report tablet after burst finally can correctly weigh
Dress up as original datagram.In practical applications, since the use of fragment message may bring some problems, such as can not
To 4 layers of information are controlled, fragment data is easily lost, and the MTU of conventional network equipment is often bigger, so real
It is less in border to carry out burst processing to IP packet.
Based on the actual application background of above-mentioned Identification fields, technical solution of the present invention is by redefining IP
Identification fields carry out implementation strategy control in heading.First, by the reserved word of the Flags fields in IP packet head
Section, i.e. highest order Bit0 field definitions are the indication field of policy tag.Data structure schematic diagram such as Fig. 2 institutes of Flags fields
Show, as it was previously stated, in the original definition of Flag fields, DF indicate whether to allow burst, and MF indicate whether it is last
Burst, and highest order is then defaulted as 0, as reserved field without using.In the preferred embodiment of the present invention, if indication field Bit0
It is worth for 1, then it represents that policy tag is included in IP packet head；If the value of indication field Bit0 is 0, then it represents that is not wrapped in IP packet head
Containing policy tag.Further, when the value of Bit0 is 1, Identification fields are used to represent policy tag, described
Identification field sizes are 16Bit, can represent 64K strategy；When the value of Bit0 is 0, Identification
Field still represents burst information, and the burst for IP packet is handled.By above-mentioned definition procedure, IP fields and tactful word are realized
Section uncoupling, so as to achieve the purpose that forwarding and strategy decouple.
In technical solution of the present invention, any change is not made to the structure of IP packet head, by Identification words
The dual definition of section, and the values of Flag reserved fields is cleverly make use of to indicate whether Identification fields are used for plan
Slightly apply, have that definition is simple, is easily achieved, and do not increase the excellent of the extra costs such as list item space consumption, special equipment identification
Point.
For conventional network equipment, due to nonrecognition Flag reserved field itself, existing strategy protocol is still carried out；And
Equipment for can recognize that Flag reserved fields, then known there are during policy tag by the worth of indication field, can incited somebody to action
Policy field in Identification fields extracts, and is controlled accordingly according to different strategy executions.And know
It is clipped to the burst processing that the equipment of policy tag then no longer supports IP layer message, unidentified when arrive policy tag, still support divides
Piece processing.In this way, can compatible conventional network equipment, it is not necessary to unified upgrading is carried out to conventional network equipment, progressively replaces and is
Can, framework and deployment on current network influence minimum.
Based on technical scheme, it can be achieved that forwarding and strategy interaction uncoupling, can for any IP address
Realize flexible policy control, and can be very good to need forwarding entry number to be used in planning network equipment, and strategy
Entry number, reaches preferably control management.
It should be appreciated that the technical concepts and features of above-described embodiment only to illustrate the invention, its object is to allow be familiar with this
The personage of item technology can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all
The equivalent change or modification that Spirit Essence is made according to the present invention, should be covered by the protection scope of the present invention.
Claims (6)
- A kind of 1. implementation method of the policy tag based on IPv4, it is characterised in that the described method includes：By in IP packet head The highest order reserved field of Flags fields is as indication field, for representing whether include policy tag in IP packet head；It is described Policy tag uses Identification fields in IP packet head to be defined.
- 2. the implementation method of the policy tag according to claim 1 based on IPv4, it is characterised in that：The indication field Value be 1 when, represent IP packet head in include policy tag；When the value of the indication field is 0, represent not wrap in IP packet head Containing policy tag.
- 3. the implementation method of the policy tag according to claim 1 based on IPv4, it is characterised in that：The IP packet head Middle Identification field definitions are burst information or policy tag.
- 4. the implementation method of the policy tag according to claim 3 based on IPv4, it is characterised in that：The indication field When expression includes policy tag, Identification field definitions are policy tag, for policy control；The indication field When expression does not include policy tag, Identification field definitions are burst information, and the burst for IP packet is handled.
- 5. the implementation method of the policy tag as claimed in any of claims 1 to 4 based on IPv4, its feature exist In：Equipment for that cannot identify the indication field, performs equipment original strategy protocol.
- 6. the implementation method of the policy tag as claimed in any of claims 1 to 4 based on IPv4, its feature exist In：When equipment is by identifying that the indication field learns that IP packet head includes policy tag, extract in the policy tag Policy field, make corresponding policy control, and the equipment no longer supports IP layers of burst to handle；When equipment is by identifying that the indication field learns that IP packet head does not include policy tag, the equipment supports IP layers Burst processing.
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| CN201711353395.3A CN108011839A (en) | 2017-12-15 | 2017-12-15 | The implementation method of policy tag based on IPv4 |
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| CN201711353395.3A CN108011839A (en) | 2017-12-15 | 2017-12-15 | The implementation method of policy tag based on IPv4 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1852239A (en) * | 2005-10-12 | 2006-10-25 | 华为技术有限公司 | Method for actualizing route strategy through boundary gateway |
| CN101854268A (en) * | 2009-04-04 | 2010-10-06 | 华为技术有限公司 | Method, device and system of IP (Internet Protocol) network performance measurement as well as method, device and system of IP network service quality control |
| CN102571545A (en) * | 2010-12-27 | 2012-07-11 | 华为技术有限公司 | Method and device for transmitting information in IPv4 (Internet Protocol vision 4) network |
| CN103532672A (en) * | 2013-10-22 | 2014-01-22 | 芮雄丽 | Processing method of disordered fragmentation messages in SDN and application |
| JP2016146516A (en) * | 2015-02-06 | 2016-08-12 | 日本電信電話株式会社 | Flow control system and flow control method |
| CN106506274A (en) * | 2016-11-08 | 2017-03-15 | 东北大学秦皇岛分校 | A kind of efficient single bag source tracing method of dynamic extending |
-
2017
- 2017-12-15 CN CN201711353395.3A patent/CN108011839A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1852239A (en) * | 2005-10-12 | 2006-10-25 | 华为技术有限公司 | Method for actualizing route strategy through boundary gateway |
| CN101854268A (en) * | 2009-04-04 | 2010-10-06 | 华为技术有限公司 | Method, device and system of IP (Internet Protocol) network performance measurement as well as method, device and system of IP network service quality control |
| CN102571545A (en) * | 2010-12-27 | 2012-07-11 | 华为技术有限公司 | Method and device for transmitting information in IPv4 (Internet Protocol vision 4) network |
| CN103532672A (en) * | 2013-10-22 | 2014-01-22 | 芮雄丽 | Processing method of disordered fragmentation messages in SDN and application |
| JP2016146516A (en) * | 2015-02-06 | 2016-08-12 | 日本電信電話株式会社 | Flow control system and flow control method |
| CN106506274A (en) * | 2016-11-08 | 2017-03-15 | 东北大学秦皇岛分校 | A kind of efficient single bag source tracing method of dynamic extending |
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Application publication date: 20180508 |